Which abbreviation is used to denote 'after meals' in medication instructions?

The abbreviation that is used to denote 'after meals' in medication instructions is indeed the correct choice. The abbreviation "pc" comes from the Latin phrase "post cibum," which means "after meals." This instruction is important in medication administration, as certain medications may have specific requirements for timing related to meals in order to maximize effectiveness or minimize side effects.

In contrast, the other options represent different medical abbreviations that serve different meanings. "qod" stands for "every other day," which focuses on the frequency rather than the timing related to meals. "qd" means "once daily," again addressing frequency rather than whether the administration is before or after meals. Lastly, "am" refers to "ante meridiem," which indicates times in the morning or "before noon," and does not address meal timing at all. Understanding these distinctions is crucial for accurate medication administration and patient care.